BACKGROUND Anterior transpetrosal approach (ATPA) and lateral suboccipital approach (LSO) are the major surgical approaches for cerebellopontine angle (CPA) meningiomas. Particularly, anterior CPA meningiomas are challenging lesions to be treated surgically. To date, only a few studies have directly compared the outcomes of both approaches focusing on the anterior CPA meningiomas. METHODS For the comparative analysis, anterior CPA meningiomas that were eligible for both APTA and LSO were collected in our hospital from April 2005 to March 2017. Anterior CPA meningiomas targeted for this study were defined as follows: (1) without cavernous sinus, clivus, and middle cranial fossa extension, (2) the posterior edge is 1 cm behind the posterior wall of the internal auditory canal, and (3) the inferior edge is above the jugular tuberculum. Based on these criteria, the operative outcomes of 17 patients and 13 patients who were operated via ATPA and LSO were evaluated. RESULTS The complication rate of the LSO group was significantly higher than that of the ATPA group (30.7% vs. 0%, p = 0.033). The removal rate did not differ between the ATPA and LSO groups (97.35% vs. 99.23%, p = 0.12). The operative time was significantly shorter in the LSO group than in the ATPA group (304.3 min vs. 405.8 min, p = 0.036). CONCLUSIONS Although the LSO is more widely used for CPA meningiomas, ATPA is also considered for these anterior CPA meningiomas.

中文翻译：

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与经枕后外侧入路相比，采用经前经皮穿刺入路治疗小脑桥前角脑膜瘤的手术结果。

背景技术经颅前入路（ATPA）和枕下外侧入路（LSO）是小脑桥脑角（CPA）脑膜瘤的主要手术入路。特别是，前CPA脑膜瘤对手术治疗具有挑战性。迄今为止，只有少数研究直接比较了两种方法的结果，重点是前CPA脑膜瘤。方法为了进行比较分析，我们于2005年4月至2017年3月在我院收集了同时符合APTA和LSO要求的前CPA脑膜瘤。本研究的目标CPA前脑膜瘤定义如下：（1）无海绵窦，锁骨，和颅中窝延伸，（2）后缘在内耳道后壁后1 cm，（3）下缘在颈椎结核上方。根据这些标准，评估了17例患者和13例通过ATPA和LSO手术的患者的手术结局。结果LSO组的并发症发生率显着高于ATPA组（30.7％vs. 0％，p = 0.033）。ATPA组和LSO组之间的去除率没有差异（97.35％对99.23％，p = 0.12）。LSO组的手术时间明显短于ATPA组（304.3分钟vs.405.8分钟，p = 0.036）。结论尽管LSO被更广泛地用于CPA脑膜瘤，但ATPA也被认为可用于这些CPA前脑膜瘤。ATPA组和LSO组之间的去除率没有差异（97.35％对99.23％，p = 0.12）。LSO组的手术时间明显短于ATPA组（304.3分钟vs. 405.8分钟，p = 0.036）。结论尽管LSO被更广泛地用于CPA脑膜瘤，但ATPA也被认为可用于这些前CPA脑膜瘤。ATPA组和LSO组之间的去除率没有差异（97.35％对99.23％，p = 0.12）。LSO组的手术时间明显短于ATPA组（304.3分钟vs.405.8分钟，p = 0.036）。结论尽管LSO被更广泛地用于CPA脑膜瘤，但ATPA也被认为可用于这些CPA前脑膜瘤。